1986. The building is known for the granite Mayan temple design on the top, which was inspired by the architect's visit to the Mexican Yucatán. Recently renovated at the cost of $6 million, the building was the last major office building completed in downtown Houston prior to the collapse of the Texas real estate, banking, and oil industries in the 1980s. Houston's building boom of the 1970s and 1980s ceased in the mid-1980s, due to the 1980s oil glut. Building of skyscrapers resumed by 2003, but the new buildings were more modest and not as tall. During that year George Lancaster, a spokesperson for the Hines company, said "I predict the J.P. Morgan Chase Tower will be the tallest building in Houston for quite some time." In the early 1990s many older office buildings throughout Houston remained unoccupied. At the same time newer office buildings for major corporations opened. In 1999, the Houston-based Enron Corporation began construction of a 40-floor skyscraper. Designed by Cesar Pelli & Associates and Kendall/Heaton Associates, and completed in 2002, the building was originally known as the Enron Center. The company collapsed in a well-publicized manner in 2001, and the building became officially known by its address, 1500 Louisiana Street One of Houston's most recent downtown landmarks is Discovery Green, a large public park designed by Page Southerland Page with Hargreaves Associates. The Uptown District, located on Interstate 610 West (referred to locally as the "West Loop") between U.S. Highway 59 and Interstate 10, boomed along with Houston during the 1970s and early 1980s. During that time the area grew from farm land in the late 1960s to a collection of high-rise office buildings, residential properties, and retail establishments, including the Houston Galleria. The area is an example of what architectural theorists call the edge city. In the late 1990s Uptown Houston saw construction of many mid- and high-rise residential buildings of the tallest being about 30 stories. The tallest structure in Uptown Houston is the tall, Philip Johnson-designed, landmark Williams Tower (formerly "Transco Tower"), which was constructed in 1983. At the time, it was to be the world's tallest skyscraper outside of a city's central business district. The building is topped with a rotating spot light that constantly searches the horizon. Williams Tower was named "Skyscraper of the Century" in the December 1999 issue of Texas Monthly magazine. Landmarks and monuments The Merchants and Manufacturers